Cement



ueurao stares PATENT OFFICE.

CEMENT.

No Drawing.

2 county of certain new and useitul improvements in Cement; and do hereby declare the following to he a full, clear, and exact description of the invention, such as will enable others led in he art to which it apportains to make and use the same.

v imrention relates to cement, well to unite bodies, and particularly to "-ie cally seal the stoppers or cans and the like.

said inven ion, 1 use for 5. my improved cemen the commonly known in (Ui'IlIDOlQO a pitch, rosin or 0010- cotton :3 .l o i, or other oil or fat suitably amalgamate with the dients; paper-pulp, paper, felt, hair or other suitable substance which will as a filler; and finally ealcic-hydrate. in hulking my improved cement, 1 pretl-e aforc: ':l ingredients in the folniannerf l he pitch and rosin are separately heated until liquefied and then strained. The paper-pulp or its equival: o is finely disint' 1 d. The calcich irate, when incorporated w th the aforesaid ingredients in manner hereinafter described, should be in a freshly prepared finely divided, dry, warm and caustic condition.

@f the ingredients prepared as aforesaid, I take the following proportions by weight, namely, Swedish pitch 50 parts; rosin or colophony 2%.5 parts; cotton-seed oil or its equivalent 9.5 parts; paper-pulp or its equivalent 140 parts; calcic hyc rate 2.0 parts.

The Swedish pitch and rosin are re-liquelied by moderate heat and well mixed, and the oil added, and to the resultantliquid while hot and well stirred, the calcic hydrate is added. through the meshes of a line sieve, with this hot mixture the paper pulp or its equivalent made warm and dry for the purpose, is incorporated.

The mass. now broue'ht to a temperature of about 200 Fahrenheit, is then well kneaded until of uniform consistency.

As the commercial quality of most of the said ingredients varies considerably, it is advisable in manufacture, to first make a Specification of Letters Eatent.

Patented Nov. 16, 1920.

Application filed December 16, 1919. Serial No. 345,306.

small quantity of the cement for testing purposes, following upon which it may be found that a slight alteration in the quantity used of one or more of the ingredients is necessary to insure a cement possessing the properties hereinafter described.

A slight increase in the quantity added of the paper pulp, or of the calcic hydrate serves to reduce the viscidity of the cement, ut as the finely divided caustic calciciydrate acts not only mechanically as a filler,

also chemically on the acid radicals of 1 pitch, resin and oil; great care should as taken not to add an excess of this ingredieni', as even a slight excess of calcic-hydrate serves to greatly impair the adhesive and ohesive properties of the cement when hot. Used in the proportions given, or nearly so, the calcic-hydrate makes the cement harder when hot, and also more resistant to the dis- 'nte, ;rating action of heated vapors and iquids.

it a summer temperature of say 90 de" grees Fahrenheit, my cement is plastic, pliaable and non-adhesive; at lower temperatures it becomes harder and less plastic; at higher temperatures it becomes soft, viscid and consequently adhesive.

The cement will adhere to any surface to which is applied, provided that the surface be dry and suffioiently warm to make the nent viscid; when cold the applied cement will be more or less firmly attached to the surface.

The cement will adhere more quickly if it is itself warm when applied, and if immediately after its application the outer surface of the cement be softened by a hot iron, but care should be taken not to oversoften or burn the cement with the hot iron. if desired the cooling and hardening of the cement, after it is applied, can be hastened by the application of cold water.

My improved cement is very useful for sealing; a bottle or the like when the latter contains hot pasteurized fruit; such a receptacle covered with, say a glass cover, can be easily, eiqieditiously and hermetically sealed by placing a layer of the cement over the interstice between the cover and the bottle.

rim and the cover. This method of sealing is expensive, as it necessitates the employ ment of receptacles With mouths of standard shape, and fitments adapted to same. By the use of my cement the same is avoided and receptacles with mouths of almost any shape can be hermetically sealed with no other fitment than the cover.

Covers secured by my improved cement to bottles and the like, can be readily removed by Warming the cement until it is soft enough to be cut with a knife or otherwise dis laced.

aving thus describedmy invention What I claim and desire to secure by Letters Patent of the United States is 1. A cement comprising an intimate mixture of substantially 50 parts by Weight of Swedish pitch, 24.5 of rosin, 9.5 parts of a vegetable oil, 14: parts of paper pulp, and 2 parts of calcic-hydrate.

2. A cement comprising an intimate mixture of substantially 50 parts by Weight of Swedish pitch, 24.5 of rosin, 9.5 parts of cotton seed oil, lat parts of paper pulp, and 2 parts of caloric-hydrate.

In testimony whereof I aiiiz; my signature.

ARTHUR RICHARD SCARLETT. 

